The Lockheed S-3B Aircraft was originally developed with Anti-Submarine Warfare (ASW) as its primary mission. Now, the S-3B Aircrafts role in Carrier Aviation is changing focus. The S-3B Aircrafts ASW and Mining Warfare missions were deleted by Chief of Naval Operations Message in December 1999. Deconfiguration of aircraft, in compliance with removal of ASW specific equipment, was accomplished in accordance with AFC 284, this change was completed in FY00. The S-3B Aircraft continues to perform a myriad of functions which include, but are not limited to, Anti-Air Warfare, Anti-Surface Warfare (ASUW), Amphibious Warfare, Counter-Targeting, Over-the-Horizon Targeting, Airborne Reconnaissance, and Command and Control. S-3B Aircraft are tasked by the Carrier Battle Group Commanders to provide surface surveillance and intelligence collection, electronic warfare, mine warfare, coordinated search and rescue, and fleet support missions, including air wing tanking.